Quercetin 95% | Sophora japonica

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Quercetin is a powerful antioxidant found in many plant-based products. It positively affects the immune system and helps to reduce inflammation, mainly by blocking secretion of histamine. Moreover, it improves metabolism in the cells providing better physical performance and general vitality of the whole body.


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Quercetin 95% | Sophora japonica

Properties: There is no need to convince anyone that fruits and vegetables are healthy. This is a common knowledge eagerly spread by all doctors and dietitians. But why exactly these products are so beneficial for health seems to be less known. The secret lies in the chemical composition of plants, particularly in the natural substances they contain. There are plenty of them, just like there are a lot of plants and their subspecies. However, some of these substances are especially interesting. Thus, it is worthwhile to spend a moment and analyze the way in which they impact the organism. One of such substances is actually quercetin – a flavonoid found mostly, but not only, in fruits and vegetables. Interestingly, it also can be found in tea leaves – especially in green tea.  

Why is this organic substance so popular as a diet supplement? Well, the main reason is that it benefits the functioning of the entire organism – particularly its defence mechanisms. Quercetin has a strong anti-inflammatory effect, thus it efficiently strengthens the immune system. Moreover, it protects the organism by eliminating toxic substances such as free radicals, which makes it an effective antioxidant. On top of that, quercetin is successfully employed in antiallergic therapy, because it blocks the secretion of histamine – a substance crucial in allergic reaction. 

However, the properties of quercetin are not limited to the immune system. It has a broad influence on the entire organism. For instance, it promotes cellular energy production mostly by affecting the biochemical processing of mitochondria. Thus, by supplementing quercetin, we can strengthen the physical performance of the body. After all, mitochondria serve as a kind of cellular powerhouse. As a result, we feel more energized and regenerate faster after intense physical effort. This is why quercetin can be really handy during an exhausting workout, although its benefits will satisfy every person – not only sportsmen. As it turns out, this natural flavonoid can also lower the blood cholesterol level and regulate the glucose production. Taking all these effects into account, it becomes clear that quercetin has a powerful impact on our general vitality.  

Speaking of health, we should take care of it primarily through a well-balanced diet, because it is together with food that we provide our body with the necessary compounds, including quercetin. Sometimes, however, it turns out that we suffer from its deficiency – for instance during stressful life periods. In these times, it is worthwhile to consider quercetin supplementation. Then, we deliver its pure form to the organism, and can experience the full power of its benefits.

Occurrence: Quercetin is widely present in the world of plants. It is found in everyday products such as onion, kale, broccoli, apple, blueberries, spinach, blackcurrant, grapes, orange and tea leaves. It can also be found in herbs – such as common rue, horsetail, St. John’s wort, ginkgo biloba or elderberry. It is also present in other plants, including the Japanese pearl fruit and in plant-based products such as juices, red wine and honey.

Biochemistry: Quercetin is an organic polycyclic aromatic compound from the flavonoid group. Its molecules have a flat structure, thanks to which it easily penetrates deep into the lipid bilayer. Quercetin is a component of many flavonoid glycosides. It is an aglycone of many compounds, including rutin, quercitrin, isoquercitrin, hyperoside and avicularin.

Fun fact: The name “quercetin” comes from the Latin word quercetum, which means the oak forest or simply quercus – “oak”. It’s because quercetin has been found in the bark of oak trees.

How does Quercetin 95% | Sophora japonica work?

Improves general health condition: Quercetin has beneficial influence on the entire organism. Research results have confirmed that it generally decreases blood cholesterol level – including its “bad” fraction LDL. In turn, it increases the level of its “good” fraction – HDL. Moreover, it dilates blood vessels, which helps to regulate the blood pressure. In this way, it benefits the condition of the cardiovascular system and supports the prophylaxis of atherosclerosis. Antioxidative properties of quercetin are highly relevant for the healthy effects of its supplementation. When the density of free radicals in the organism is too high, the important cellular structures such as mitochondria or DNA become endangered. Quercetin neutralizes free radicals and therefore prevents damaging of the cells as well as premature aging of the organism.

Regulates the functioning of the immune system: Results of research studies demonstrate that quercetin reduces the inflammation in the organism. Perhaps this effect stems from its ability to neutralize free radicals, which, in high density, have the ability to activate defense mechanisms and hence trigger inflammation. What is more, quercetin limits the activity of proinflammatory mediators such as histamine. Clinical trials have proven that the regular supplementation of this flavonoid leads to a decrease of joint stiffness and the pain that stems from the inflammation of joints. Scientists suppose that quercetin can be helpful in the case of allergies. This field is currently under intense investigation.

Improves physical performance: It has been proven that quercetin stimulates biogenesis of mitochondria – the process in which these cellular powerhouses multiply. Scientists observed this effect in the central nervous system and skeletal muscles. When there are more mitochondria, the cells can produce higher amounts of ATP – the main energy transmitter required in many important biochemical reactions. Then,  these reactions can occur faster and cells – including muscle fibers – become more efficient. Quercetin also accelerates the regeneration of the organism after intense physical effort. In this context, its anti-inflammatory and antioxidative properties are very important. They allow the organism to recover quickly, even after an exhausting workout.

Body mass reduction: Research with animal models has demonstrated that quercetin can successfully support the fight against obesity. It has been proven that this compound limits the storage of lipid tissue caused by a diet high in fats. What is more, it accelerates the usage of already stored energy resources, which may lead to even 40% reduction of body mass. Additionally, it improves the sensitivity of cells towards insulin, thereby normalizing the blood glucose level. Currently, researchers are validating whether this effect holds also in human organisms.

Quercetin 95% | Sophora japonica product specification


  • powdered raw ingredient
  • extract from the buds of Sophora japonica (>95% quercetin)
  • PET measuring tool 1 ml ~ 230 mg
  • airtight ALU-PET bag
  • nutrition, neuroregulation, herbal medicine
  • ingredient admitted to trading in the EU and the US


How to use Quercetin 95% | Sophora japonica?


  • 300 – 600 mg
  • 1 – 2
  • with food
  • during the day
  • 12 weeks of using – 4 weeks of break

How to stack Quercetin 95% | Sophora japonica?

To improve general health condition:
To support the immune system:
To improve endurance:
To facilitate weight loss:

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The above information about products should be considered a historical and scientific facts, not a recommendation on how to use a specific substance. Dietary supplements should not be treated as an alternative to a healthy lifestyle and balanced diet. The above information is not medical advice. Every use of a dietary supplement or herbal/nootropic compound should be consulted with a doctor or a specialist. Dietary supplements as well as nootropic and herbal compounds should not be mixed with medication. Our products should not be used by breastfeeding women and by the people under the age of 18.